ALMA and VLA observations of the outflows in IRAS 16293-2422

被引：32

作者：

Loinard, Laurent ^{[1
,2
]}

Zapata, Luis A. ^{[1
]}

Rodriguez, Luis F. ^{[1
]}

Pech, Gerardo ^{[1
]}

Chandler, Claire J. ^{[3
]}

Brogan, Crystal L. ^{[4
]}

Wilner, David J. ^{[5
]}

Ho, Paul T. P. ^{[5
,6
]}

Parise, Berengere ^{[2
]}

Hartmann, Lee W. ^{[7
]}

Zhu, Zhaohuan ^{[8
]}

Takahashi, Satoko ^{[6
]}

Trejo, Alfonso ^{[6
]}

机构：

[1] Univ Nacl Autonoma Mexico, Ctr Radiostron & Astrofis, Morelia 58089, Michoacan, Mexico

[2] Max Planck Inst Radioastron, D-53121 Bonn, Germany

[3] Natl Radio Astron Observ, Socorro, NM 87801 USA

[4] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[5] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[6] Acad Sinica, Inst Astron & Astrophys, Taipei 115, Taiwan

[7] Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA

[8] Princeton Univ, Dept Astrophys Sci, Princeton, NJ 08544 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2013年 / 430卷 / 01期

关键词：

techniques: interferometric; stars: formation; stars: individual: IRAS 16293-2422; ISM: jets and outflows; 1ST HYDROSTATIC CORE; SOLAR-TYPE PROTOSTAR; SUBMILLIMETER ARRAY; MULTIPLE SYSTEM; PROPER MOTIONS; STAR-FORMATION; RADIO-SOURCES; IRAS-16293-2422; INFALL; OPHIUCHUS;

D O I：

10.1093/mnrasl/sls038

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present Atacama Large Millimeter/submillimeter Array (ALMA) and Very Large Array (VLA) observations of the molecular and ionized gas at 0.1-0.3 arcsec resolution in the Class 0 protostellar system IRAS 16293-2422. These data clarify the origins of the protostellar outflows from the deeply embedded sources in this complex region. Source A2 is confirmed to be at the origin of the well-known large-scale north-east-south-west flow. The most recent VLA observations reveal a new ejection from that protostar, demonstrating that it drives an episodic jet. The central compact part of the other known large-scale flow in the system, oriented roughly east-west, is well delineated by the CO(6-5) emission imaged with ALMA and is confirmed to be driven from within component A. Finally, a one-sided blueshifted bubble-like outflow structure is detected here for the first time from source B to the northwest of the system. Its very short dynamical time-scale (similar to 200 yr), low velocity and moderate collimation support the idea that source B is the youngest object in the system, and possibly one of the youngest protostars known.

引用

页码：L10 / L14

页数：5

共 32 条

[1]

Arce H. G., 2007, Protostars and Planets V, P245, DOI 10.48550/arXiv.astro-ph/0603071

[2]

BODENHEIMER P, 1995, ANNU REV ASTRON ASTR, V33, P199

[3] A multiple system of radio sources at the core of the L723 multipolar outflow [J].

Carrasco-Gonzalez, Carlos ;

Anglada, Guillem ;

Rodriguez, Luis F. ;

Torrelles, Jose M. ;

Osorio, Mayra ;

Girart, Jose M. .

ASTROPHYSICAL JOURNAL, 2008, 676 (02) :1073-1081

[4] Multiple shocks around the low-luminosity protostar IRAS 16293-2422 [J].

Castets, A ;

Ceccarelli, C ;

Loinard, L ;

Caux, E ;

Lefloch, B .

ASTRONOMY & ASTROPHYSICS, 2001, 375 (01) :40-53

[5]

Ceccarelli C, 2000, ASTRON ASTROPHYS, V355, P1129

[6] IRAS 16293-2422: Proper motions, jet precession, the hot core, and the unambiguous detection of infall [J].

Chandler, CJ ;

Brogan, CL ;

Shirley, YL ;

Loinard, L .

ASTROPHYSICAL JOURNAL, 2005, 632 (01) :371-396

[7] L1448 IRS2E: A CANDIDATE FIRST HYDROSTATIC CORE [J].

Chen, Xuepeng ;

Arce, Hector G. ;

Zhang, Qizhou ;

Bourke, Tyler L. ;

Launhardt, Ralf ;

Schmalzl, Markus ;

Henning, Thomas .

ASTROPHYSICAL JOURNAL, 2010, 715 (02) :1344-1351

[8] The solar type protostar IRAS16293-2422: new constraints on the physical structure [J].

Crimier, N. ;

Ceccarelli, C. ;

Maret, S. ;

Bottinelli, S. ;

Caux, E. ;

Kahane, C. ;

Lis, D. C. ;

Olofsson, J. .

ASTRONOMY & ASTROPHYSICS, 2010, 519

[9] DETECTION OF A BIPOLAR MOLECULAR OUTFLOW DRIVEN BY A CANDIDATE FIRST HYDROSTATIC CORE [J].

Dunham, Michael M. ;

Chen, Xuepeng ;

Arce, Hector G. ;

Bourke, Tyler L. ;

Schnee, Scott ;

Enoch, Melissa L. .

ASTROPHYSICAL JOURNAL, 2011, 742 (01)

[10] A CANDIDATE DETECTION OF THE FIRST HYDROSTATIC CORE [J].

Enoch, Melissa L. ;

Lee, Jeong-Eun ;

Harvey, Paul ;

Dunham, Michael M. ;

Schnee, Scott .

ASTROPHYSICAL JOURNAL LETTERS, 2010, 722 (01) :L33-L38

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